A NatHERS assessment is a mandatory requirement for most new residential builds in Australia. Understanding the process helps you avoid delays and additional costs.
What Is a NatHERS Assessment?
NatHERS (Nationwide House Energy Rating Scheme) uses accredited software to simulate your home's thermal performance across a full year of weather data. The result is a star rating from 0 to 10 that indicates how energy-efficient your design is.
What You Need to Provide
Your assessor will need architectural plans (floor plans, elevations, sections), window and door schedules, construction specifications (wall types, insulation, glazing), and the site address for climate zone data.
The Assessment Process
The assessor models your home in NatHERS-accredited software, simulating thermal performance hour by hour across a full year. They then provide recommendations for improvement if needed, and issue the final certificate once compliance is achieved.